{"id":924,"date":"2006-01-20T13:14:00","date_gmt":"2006-01-20T12:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/venus\/"},"modified":"2026-10-08T00:33:50","modified_gmt":"2026-10-07T22:33:50","slug":"venus","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/venus\/","title":{"rendered":"Venus"},"content":{"rendered":"
\n

Venus \u00e4r den andra planeten r\u00e4knat fr\u00e5n Solen, s\u00e5 den befinner sig alltid ganska n\u00e4ra Solen p\u00e5 himlen. Den framtr\u00e4der som en str\u00e5lande \u201cstj\u00e4rna\u201d p\u00e5 morgonen eller kv\u00e4llen \u2013 det ljusaste objektet p\u00e5 natthimlen bortsett fr\u00e5n m\u00e5nen. Genom ett teleskop kan man se att den genomg\u00e5r olika faser, precis som m\u00e5nen.<\/p>\n<\/div>\n

Venus lyser s\u00e5 starkt eftersom den \u00e4r t\u00e4ckt av moln som reflekterar en stor del av det inkommande solljuset. De gulaktiga molnen best\u00e5r av svavel och svavelsyra.<\/p>\n

P\u00e5 vissa s\u00e4tt \u00e4r Venus jordens tvilling. Den \u00e4r ungef\u00e4r lika stor och best\u00e5r av samma bergartsmaterial. Den ligger ocks\u00e5 n\u00e4rmare oss \u00e4n n\u00e5gon annan planet. Den \u00e4r dock omgiven av en tjock atmosf\u00e4r av koldioxid \u2013 den gas som vi andas ut. Denna atmosf\u00e4r \u00e4r s\u00e5 t\u00e4t att det skulle k\u00e4nnas som att vada genom vatten om man gick igenom den.<\/p>\n

Koldioxiden h\u00e5ller kvar st\u00f6rre delen av solens v\u00e4rme. Molnlagren fungerar ocks\u00e5 som ett t\u00e4cke. Resultatet blir en \u201cokontrollerad v\u00e4xthuseffekt\u201d som har f\u00e5tt planetens temperatur att stiga till 465 \u00b0C, vilket \u00e4r tillr\u00e4ckligt varmt f\u00f6r att sm\u00e4lta bly. Det inneb\u00e4r att Venus \u00e4r \u00e4nnu varmare \u00e4n Merkurius.<\/p>\n

Utan s\u00e4rskilt skydd skulle en bes\u00f6kare p\u00e5 Venus d\u00f6 omedelbart \u2013 krossad av det enorma lufttrycket, kv\u00e4vd av atmosf\u00e4ren, br\u00e4nd till aska av den gl\u00f6dande hettan och uppl\u00f6st av syran.<\/p>\n

Venus yta har kartlagts med hj\u00e4lp av radar. Kartorna visar tusentals vulkaner och nedslagskratrar. Det finns tv\u00e5 st\u00f6rre h\u00f6glandsomr\u00e5den, med en bergskedja som \u00e4r h\u00f6gre \u00e4n Mount Everest.<\/p>\n

Dussintals rymdfarkoster har bes\u00f6kt Venus, men m\u00e5nga mysterier kvarst\u00e5r. ESA:s Venus Express har befunnit sig i en n\u00e4stan pol\u00e4r omloppsbana runt planeten sedan den anl\u00e4nde i april 2006. De flesta av dess instrument har studerat den t\u00e4ta atmosf\u00e4ren och de snabbt r\u00f6rliga molnen, eller unders\u00f6kt hur solen p\u00e5verkar planeten. Dess infrar\u00f6da sensor har dock ocks\u00e5 kunnat kartl\u00e4gga delar av ytan och visa att det kan finnas aktiva vulkaner p\u00e5 jordens granne.<\/p>","protected":false},"excerpt":{"rendered":"

Venus is the second planet from the Sun, so it is always fairly close to the Sun in the sky. It appears as a brilliant morning or evening \u201cstar\u201d \u2013 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2002\/01\/venus_in_ultraviolet_light2\/17863345-3-eng-GB\/Venus_in_ultraviolet_light.jpg","esa_banner_description":"Venus in ultraviolet light","esa_banner_credit":"L. Esposito (University of Colorado, Boulder), and NASA\/ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/01\/Venus_in_ultraviolet_light2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,12],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-924","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/924","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=924"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/924\/revisions"}],"predecessor-version":[{"id":2067,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/924\/revisions\/2067"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=924"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=924"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=924"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=924"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=924"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=924"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=924"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}